10 Fisher !i Board for Scotland. 



During the same month one egg was got between Orkney and Shet- 

 land, viz., ten miles E. of Fair Isle. The enibiyo was about three- 

 quarters developed. Thirty-eight eggs were captured 40 miles E. of 

 Shetland in this month. . The embryos were about ready to hatch 

 (Fig. 5). The embryo dissected out of one of the eggs is shown 

 enlarged in Fig. 12. 



Ahuormal Beprodudive Unjans. 



A fish measuring 47 cm. in length had a normal reproductive organ 

 on the left side (/.) and an abnormal organ on the right side (Fig. 1). 

 The latter contained several dark-coloured concretions(c.). while a small 

 concretion (c"") was attached to the testis of the left organ. The 

 concretions are collections of unspawned eggs. The concretion c" is 

 hard and dark-coloured. It is situated in tlie ovary. It cuts like a 

 hard cheese, and shows in section a conglomerate of eggs. The eggs 

 in the lighter-coloured balls, c. and c', appear to be formed of the eggs 

 of a later spawning than c" . 



The quashed eggs measured 1-5 mm. in greatest length. The cap- 

 sules were flattened and the yolk had disappeared from many alto- 

 gether, although still present in some. The old eggs had a single oil 

 globule •22 mm. in diameter. 



The honeycomb structure of the testis was well seen in the right 

 organ. Clean oval holes were observed in the septa of the honeycomb 

 tissue. 



The left ovary was developing, while the other remained in a state 

 of quiescence. The presence of the ball of unspawned eggs had evi- 

 dently inhibited the development of a new crop of ova. Will the for- 

 mation of the ne\\' ova be prevented if the ovary is in a state of com- 

 pression ? 



In another fish the anterior portion of the ovary was detached from 

 the remainder (Fig. 19). No testis was observed attached to the isolated 

 portion. 



A Fish with a Secondj Aims. 



A fish which measured 42 cm. in length had a second anus. The 

 gut was attached to the wall of the abdomen, which was perforated by 

 a pore that opened into the gut (Fig. 3). 



The usual condition of the gut is as follows : — After leaving the 

 stomach the gut (d) passes back to the end of the abdominal cavity ; 

 it then turns round and comes forward to the anterior end of the 

 cavity. It then returns posteriorly and proceeds directly to the anus. 

 The three portions of the gut are looped together bj^ mesentery. The 

 middle portion of the gut is the part wdiich was connected to the second 

 anus (an). An enlarged drawing, Fig. 7, shows the gut and the pai't 

 of the abdominal wall (ir). A fat-fold is attached to the mesentery. 

 Two encysted parasites (c) were located in the mesentery. The con- 

 tinuation of the gut through the body wall is shown in Fig. 15. The 

 antero-posterior direction is indicated by the letters a-jj. The 

 secondai'y anus was 2 mm. long. Two little processes were present on 

 one side (Fig. 14). 



It seemed as if very little matter could have found exit by this 

 aperture. 



